All-New 2018 Buick Enclave

October 2017, Volume 19, No. 19

CONTENTS The 2018 Enclave, Buick’s all-new seven passenger midsize luxury SUV, features a longer wheelbase than the previous generation with a body structure built for safety, strength and mass efficiency. The standard 3.6L V6 engine with Stop/Start technology is paired with an efficient 9-speed automatic transmission. Plus, there are 17 radar, camera and ultrasonic sensors, when fully All-New 2018 Buick Enclave...... 1 equipped, that provide a wealth of data for the numerous safety and collision avoidance features. Intake Rocker Arm Oil New Model, New Technology Control Valve Components...... 4 The 2018 Enclave is now available in a new Avenir model, which is Buick’s Forward Collision System new luxury sub-brand that offers unique styling cues and an extensive list of Reduced Message...... 4 premium features. Battery Vent Plug Installation...... 5 The new styling of the Enclave showcases a lower roofline and sharper windshield angle than the model it replaces. It includes Buick’s traditional UPDATE: Loose Charge QuietTuning sound-blocking features, yet with a new active noise cancellation Air Cooler Ductwork...... 5 system. Also offering additional comfort for passengers is the new available air ionizer that eliminates odors and provides enhanced air quality. The air ionizer works by producing negatively charged particles that attract air-born contaminants Customer Care and Aftersales continued on page 2 All-New 2018 Buick Enclave – continued from page 1 and break down their structure, cleaning the cabin air. The ionizer Selecting a gear is done with the shift-by-wire Electronic Preci- doesn’t require any maintenance, but the traditional cabin filter sion Shift (EPS) gear selector, which eliminates the mechanical should be serviced regularly. To turn the ionizer on or off, go to connection to the transmission. The automatic transmission shift Settings > Vehicle > Climate and Air Quality. pattern — Park, Reverse, Neutral, Drive, and Manual positions — is displayed on top of the shift lever. The shift lever position is High Feature V6 determined by two internal sensors that each transmit an X and Y coordinate signal. All four signal circuits are inputs to the Chassis The High Feature Control Module. 3.6L V6 engine The selected gear (RPO LFY) uses position illumi- variable valve nates in red on the timing (VVT) and shift lever. direct injection (DI) to produce The shift lever 310 horsepower includes a Shift and 266 lb.-ft. of Interlock Button torque. It uses on the side of the dexos1 SAE lever that must be 5W-30 viscosity pressed to shift grade engine oil. out of Park or into Reverse as well The fuel efficient as a Park Button Stop/Start tech- on top of the nology on the lever that must be engine is similar pressed to shift to the Stop/Start the transmission Electronic Precision Shift system found on 3.6L V6 engine into Park. other GM vehicles. An advanced algorithm determines when driving conditions Switchable All-Wheel Drive are optimal to turn off the engine. The system monitors vehicle speed, climate control system operation and other conditions. The Available intelligent All-Wheel Drive (AWD) with an active twin- advanced system recognizes certain driving maneuvers, such as clutch rear differential — independently controlling torque to each backing into a garage or parking lot situations, to better determine rear wheel — and Buick’s first switchable AWD system improve whether or not the vehicle needs to operate the stop/start function. control and efficiency. Switchable AWD allows the driver to switch Unique Stop/Start system components include a tandem-solenoid between front-wheel drive and AWD when road conditions change. starter, DC-DC module that maintains voltage during a stop/start In front-wheel drive, the system disconnects virtually all of the AWD event, an electronically-controlled accumulator that retains trans- components from mission fluid pressure, and an engine mount system that dampens the drivetrain to vibrations. save fuel and re- duce emissions. 9-Speed Transmission In addition, the The 9T65 (RPO Enclave comes M3W) 9-speed, standard with the transverse- driver-controllable mounted, Traction Select electronically-con- system, which trolled automatic offers choices for transmission con- different driving sists primarily of a conditions, and 4-element torque changes the throt- converter, a com- tle response and pound planetary other calibrations gear set, friction for the selected and mechanical driving mode. AWD and Sport buttons clutch assemblies, and a hydraulic The Driver Mode Control also provides additional driver control with pressurization and Sport and Tow/Haul modes. The system simultaneously changes control system. the software calibration of various sub-systems, including the The Transmission 9T65 9-speed automatic transmission suspension, steering, and powertrain settings. On vehicles with Control Mod- Sport and Tow/Haul modes, there is only one selectable button ule (TCM) is a (Tow/Haul), which engages both the Sport features as well as the standalone unit mounted on a bracket near the transmission. Use Tow/Haul features when enabled. DEXRON®-VI Transmission Fluid in the 9T65.

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2 October 2017 All-New 2018 Buick Enclave – continued from page 2

Infotainment System The infotainment system on the Enclave includes an 8-inch (203 mm) diagonal color touchscreen. The standard system (RPO IO5) features gesture control (use simple gestures such as tap, drag and swipe to navigate through menus and screens), in-vehicle apps via Shop, Apple CarPlay™ and Android Auto™ compatibility, and natural language voice recognition. The available system (RPO IO6) with embedded navigation offers easy-to-understand turn-by-turn directions. Navigation features can be accessed using the touchscreen, voice command or within the instrument cluster using the steering wheel-mounted buttons.

Projected Buick Tri-Shield logo opened and closed by simply using a kicking motion under the driver’s side of the rear bumper, just left of center. It also features a Buick Tri-Shield logo that is projected onto the ground by an LED lamp under the rear bumper to indicate the hands-free sensor location. The key fob must be within 10 feet (3 m) of the back of the vehicle to activate the projected logo. The projected logo may not be visible in all conditions, such as on snow-covered ground or on a bright, sunny day. Spare Tire Access

Shop and Apple CarPlay/Android Auto capability are standard infotainment To access the spare tire, the cargo management system below the system features. rear cargo floor must be removed. Remove the four wing nuts and lift up on the handles on both sides to remove the cargo manage- SmartSlide Seating ment system. The storage bin can be placed on the lowered third row seats while accessing the spare tire. The SmartSlide 2nd-row seat on the passenger side of the vehicle can be slid and angled forward using the handle on the side of the seatback, allowing passengers easy access to the 3rd-row seats on the curb side of the vehicle. The seat slides and tilts forward even when a forward-facing child restraint is installed using the LATCH system. Remove a rear-facing child restraint before moving the seat for 3rd-row entry or exit. Safety Features The Driver Assistance Systems — an expanded range of radar- and camera-based active safety technologies — are designed to enhance driver awareness and aid in reducing potential collision situations. Some of the available Driver Assistance features include: • Adaptive Cruise Control The spare tire is located below the cargo management system under the rear • Forward Automatic Braking cargo floor. • Forward Collision Alert with Following Distance Indicator • Front Pedestrian Braking Special Tools • Lane Keep Assist with Lane Departure Warning The following special service tools have been released for the 2018 • Lane Change Alert with Side Blind Zone Alert Enclave: • Rear Cross Traffic Alert DT-48022 Bushing Installer • Rear Parking Assist DT-51834 Seal Installer, RH Input & Pinion Cassette • IntelliBeam high-beam headlamp control DT-51835 Seal Installer, LH Input & IDS Cassette • Safety Alert Seat EN-51332 Fuel Line Release Tool • Surround Vision camera system For additional information on the new 2018 Enclave, refer to Power Liftgate Bulletin #17-NA-285. The available hands-free power programmable liftgate can be Thanks to Sherman Dixon and Steve Bruder

October 2017 3 Intake Rocker Arm Forward Collision System Oil Control Valve Reduced Message

Components A Forward Collision System Reduced message may appear on the Driver Information Center (DIC) when the vehicle is Some 2014-2015 Impala (VIN 1) and Malibu models equipped started on 2016-2018 CT6, Escalade, Malibu, Volt; 2017-2018 with the 2.5L engine (RPO LKW) may have several driveability XT5, Bolt EV, Silverado, Suburban, Tahoe, Acadia, Sierra, conditions, such as a surge, rough idle, or misfire. The engine may Yukon; 2018 Enclave, Equinox, and Traverse models equipped misfire on cylinders 1 and 2 or cylinders 3 and 4. DTCs P0101 (MAF with Low Speed Forward Automatic Braking (RPO UHY). On Sensor Performance), P0106 (MAP Sensor Performance), P0171 some 2016 models, the DIC message displayed may be Auto- (Fuel Trim System Lean) or P0300 (Engine Misfire Detected) also matic Collision Prep Reduced. may be set. When driving in a forward gear, if the Forward Automatic If these conditions are found, follow the appropriate diagnostic pro- Braking System detects another vehicle ahead in the path that cedures in the Service Information. If the concern is not resolved, the vehicle traveling and in the same direction, it can provide inspect the intake rocker arm oil control valve for missing compo- a boost to braking or automatically brake the vehicle to help nents.

Forward Collision System Reduced DIC message

avoid or lessen the severity of a collision. Depending on the situation, the vehicle may automatically brake moderately or hard. The system works when driving in a forward gear between 5 mph (8 km/h) and 50 mph (80 km/h) or, on vehicles with Adaptive Cruise Control, above 2 mph (4 km/h). It can Valve with missing components detect vehicles up to approximately 197 ft. (60 m). There are three possible settings for the Forward Automatic If any intake rocker arm oil control valve components are missing, Braking System: replace the intake rocker arm oil control valve and the camshaft • Off cover. The camshaft cover must be replaced because some components may have become lodged in the camshaft cover oil passages. • Alert • Alert and Brake The For- ward Colli- sion System Reduced DIC message will be displayed when the Forward Auto- matic Braking System has been set to the “Alert” setting in the Vehicle The Forward Automatic Braking System has three settings. Settings on the infotainment system. The Alert setting disables most automatic braking functions, Valve with all components in place providing reduced operation. This is normal when the system has been set to “Alert.” If the intake rocker arm oil control valve is not missing any If the system is set to “Alert and Brake,” the DIC message will components, only replace the intake rocker arm oil control valve. no longer by displayed when the vehicle is started. Thanks to David Rutkowski Thanks to James Will

4 October 2017

Battery Vent Plug Installation

Absorbed Glass Mat (AGM) and flooded lead acid batteries can produce a number of potentially dangerous gases, which requires that the battery be properly vented on vehicle applications that have the battery installed inside the GM TechLink is published for all passenger compartment. The typical maintenance-free bat- GM retail technicians and service tery is completely sealed except for two small vent ports in the side. These vent ports allow the gas that is produced in consultants to provide timely the battery to escape. information to help increase know ledge about GM products and On applications with a single vent tube, the opposing vent opening on the battery cover must be plugged using the improve the performance of the vent plug. service department. Batteries that require venting include a removable vent Publisher: plug, which can be inserted into the vent port that is Vent plug attached to the John Meade opposite of the vent hose that leads to outside the vehicle. positive terminal cap. GM Customer Care and Aftersales The twist-off plug is attached to the positive terminal cap. Instructions for using the vent plug are in- Editor: cluded on the battery positive post cover. Lisa G. Scott Press fit the vent plug into the battery to GM Customer Care and Aftersales ensure proper seating into the vent port. Be Technical Editor: sure to never plug both vent ports. Mark Spencer TIP: Some batteries may have vent hose /[email protected] configurations that vent both ports to outside Production Manager: the vehicle, such as the Saturn Ion. These applications do not require a plug. Marie Meredith

Thanks to John Munsell Installed vent plug Creative Design: 5by5 Design LLC /[email protected]

Fax number: UPDATE: Loose Charge Air 3 1-248-729-4704 Cooler Ductwork Write to: * TechLink Loose connections of the charge air cooler duc- PO Box 500 twork on some 2017-2018 Silverado and Sierra Troy, MI 48007-0500 models equipped with the 6.6L Duramax diesel en- GM TechLink on the Web: gine (RPO L5P) may result in an illuminated Check : GM GlobalConnect Engine light. DTCs P0101, P0299, P0712, P11CC, P11DC, P2002, P2463, P2627, P2A00, P2459, General Motors service tips are intended P22B6, P200C, P200E, P0263, P0266, P0269, for use by professional technicians, not P0272, P0275, P0278, P0281 and/or P0284 also a “do-it-yourselfer.” They are written to may be set. inform those technicians of conditions that may occur on some vehicles, or to If any of the DTCs are set, check for loose charge Check the connection of the charge air provide information that could assist in air cooler ductwork at the turbocharger outlet pipe, cooler pipe at the intake air flow valve. the proper service of a vehicle. Properly the charge air cooler inlet pipe, the charge air cooler trained technicians have the equipment, outlet pipe, and the connection at the intake air flow valve (throttle body). tools, safety instructions and know-how TIP: The loose ductwork is most likely to become disconnected during engine roll or to do a job properly and safely. If a brake torque. Test for leaks using the smoke test procedure in the Charge Air Cooler condition is described, do not assume Diagnosis document (Service Information document ID. #4282009). that the information applies to your vehicle or that your vehicle will have that Also check for proper alignment of the charge air cooler pipe bracket and bolt hole. The condition. See a General Motors dealer bracket and bolt hole may require realignment after the charge air cooler outlet hose is servicing your brand of General Motors properly connected to the throttle body. vehicle for information on whether your vehicle may benefit from the information. If DTC P2463 (DPF Soot Accumulation) was not set and a charge air cooler leak or Inclusion in this publication is not disconnection was found, after repairing charge air cooler connections, command the necessarily an endorsement of the Diesel Particulate Filter (DPF) Regeneration Enable with the scan tool before returning the individual or the company. vehicle to the customer. Copyright© 2017 General Motors The DPF Regeneration Enable will put the vehicle in DPF regeneration mode when the All rights reserved. customer gets the vehicle, which will delay any emissions diagnostic codes that can be fouled by high soot in the exhaust until the exhaust is cleaned by the vehicle being driven with an on-road DPF regeneration. Thanks to John Stempnik

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